Fluid-mixing apparatus.



W. W. KEMP 61 W. H. VAN HORN.

FLUID MIXING APPARATUS.

APPLICATION FILED mama. 1913.

awwautou 2122mm) fill/amp flan/firm W. W. KEMP & W. H. VAN HORN.

FLUID MIXING APPARATUS.

APPLICATION FILED AUG.I3, I913.

u w I mm i M a M 6 A 1 J y W H m% L W. W. KEMP & W. H. VAN HORN.

FLUID MIXING APPARATUS.

APPLICATION FILED AUG-13,1913.

Patented J 11110 1, 1915.

6 SHEETSSHEET 3.

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lam/w Z12 fi [dd 10 7211 Z Jami 01% l/virhwoow W. W. KEMP & W. H. VAN HORN. FLUID MIXING APPARATUS. APPLICATION nun Aua.1a. 19m.

1 ,141,466. Patented June 1, 1915.

5 SHEETS-SHEET 4.

Swvzmtoz William Z11 i/e/rzp flan/[arm W, W. KEMP & W. H. VAN HORN,

FLUID MIXING APPARATUS.

APPLICATION FILED AUG.13. 1913.

1, 141,466. Patented June 1, 1915.

6 SHEETS-SHEET 5.

E I 5 l El anuanio'm W. W. KEMP & W. H. VAN HORN.

FLUID MIXING APPARATUS.

APPLICATION FILED AUG. 13. 1913.

1, 141,466. Patented June 1, 1915.

6 SHEETS-SHEET 6.

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the lay-out of the cams for operating the 5.0

UNITED STATES ATET orsro WILLIAM WALLACE KEMP AND WILLIAM H. VAN HORN, OF BALTIMORE, MARYLAND.

Burro-MIXING APPARATUS.

Be it known that we, \VILIJAM \V. KEMP and \VILLrAu H. Van HORN, citizens of the United States, residing at Baltimore, in the State of Maryland, have invented. new and useful Improvements in Fluid-Mixing Ar paratus, of which the following is a specification.

This invention relates to a fluid mixing and distributing system, and has for its object to provide an apparatus by means of .which fluids either gaseous or liquid may be mixed in exact and proper proportions, which proportions may be changed at the will of the operator without interruption to service, the apparatus continuing to miX the fluids with exactness at the proportions for which it is set until changed.

This apparatus while adapted for both liquid and gaseous fluids as stated, is illustrated and described as arranged for mixing manufactured or natural gas with air whereby a product is obtained that will burn with perfect combustion; give increased efficiency of service; reduce the consumption of gas, and by the use of which Bunsen burners may be dispensed with and the fire at the point of consumption of the mixture be controlled by a single valve.

In the drawings is illustrated an embodiment of the invention designed for mixing two fluids only, but it will readily be apparent that the invention may 'be extended to mix more than two fluids when so desired, such changes being made with slight alteration of the apparatus and without departing from the spiritof the invention.

. In the drawings, Figure 1 is a plan view of thecomp'lete apparatus in a somewhat diagrammatic form, Fig. 2 is an end elevation of the fluid measuring mechanism.- Fig. 3 is a side elevation of the. same. Fig. 4 is an end view illustrating a. modified form ofthe measuring mechanism. Fig. 5 is a sectional view illustrating a gas regulator and relief valve operated by said regulator. Fig. 6 is a detail view of the relief valve. 7 is a diagrammatic view illustrating .flui'd measuring mechanism. Figs. 8 and 9 r are diagrammatic VIQWS illustrating electria1 devices for operating the measuring -mechamsm, Fig. 10 is a plan vie-wot the measuring mechanism operated by a metermg wheel. Fig. 11 1s-an' end view of the same. Fig. ,12 is a view illustrating .a modi- Specification of Letters Patent.

Y'atented June 1, 191.5.

1913. Serial no. 734,652.

fication of the cams which may be employed with either form of the apparatus. Fig. 13 is a diagrammatic view illustrating the layout of the cams as arranged for the metering wheel. Fig. 1 is a view similar to Fig. 1 for a duplex supply of gas.

Referring to the drawings wherein like reference characters are used to indicate the same parts in the several figures, 10 indicates an inlet pipe "for a fluid which in the type of the machine illustrated is gas, either manufactured gas from the city mains, or other place of production, or natural gas from a gas-weil or other suitable source of supply. The gas is led by the pipe 10 into a reservoir 11 of a size to contain a sullicient volume of gas from which to draw the supplv for delivery to the mixing mechanism. \Vithin the reservoir 11 is a pump, blower or other compressor 12 from which a pipe 13 leads to a cut-off valve 14 through which a determined quantity of the gas passes when opened into a pipe 15 forming one leg of a Y 16, and from thence to a mixing receptacle, here shown as a pipe 1'1, into a storage tank 18 from whence it is delivered through suitable pipes to be consumed. When natural gas is to be mixed the reservoir 1]. and compressor 12 may befound unnecessary as the pressure of the gas will be sufficient. The compressor 12is driven by an electric motor 19 or other power connected to a r0tatable shaft 2-0 to one end of which is connected the compressor 12. The other end of the shaft 20 drives a pump or compressor 21 which in the present instance is used to compress and drive air through a pipe 22 to a valve 23 similar to the cut-off valve 14 from which valve 723 the air passes by w-av of a pipe 24:, forming the other leg of the Y 16, into the common mixing pipe 17.

The cut-oft? valves 1-1 and 23 are not confined to any particular type of valve, but may vary to suit circumstances. In the present instance ordinary lift valves are emploved the stems 25, 25 of which proiect downwardly through stufling glands in the underside of the casin s. The valves 14 and 23 are spaced a predetermined distance apart and are each secured to a bracket 26 bolted firmly to a stationary frame 27 prolbs ride-d with bearings for a horizontal sliding latter are finger 36, 36 which lies parallel to the slidint rod 28, and is of such length that in v whatever position the rod mav be placed the fingers 36, 36 will be in position to engage the valve stems.

The cam 30 is provided with a number of ele ations or lifts that lie side bv side transverselv, any one of which is adapted to rock the elbow lever 31 when'the latter is moved into position in line therewith bymeans of the sliding rod 28. These projections or lifts, ind cated by the letters a to h inclusive. 'are of different lengths increasing by predetermined steps from the lift a,

' which is the shortest, to the-lift h, the longest. The ends a: of all of the projections or lifts approaching" the elbow lever 31 are in a line parallel to the axis of the cam 30, so that opposite whatever projection the elbow I lever may be placed, the time of opening of the valve 14 will be the same, the time of closing the valve however will vary accordins: to the length of the projection or lift, and the quantity of gas passing through the valve. will be proportional to the lenirth of time the valve is' held open. The cam 30 is likewise provided with projections or lifts a to ii. and similarly arranged thereon. here a creator proportion'of air than gas is needed, these lifts are longer than those of the cam 3O. Obviously, these conditions may be reversed or the conditions may require that the lifts be of the same length on both cams. The approaching ends 2 of the projections or lifts a to" h do not lie in a straight line as the similar ends a: of the projections a. to h, but are stepped back as shown in Figs. 2 and 7 distance equal to the additional lenoth of porresponding projections a to h. The annular distance between the ends in of the proiections a to b and the ends 2 of the projections a to h is such that the instant the roller 34 of the lever 31 falls from any one. of the projections .7. to h to close the as valve, the correspending projection of the group of projections 4 to h will act on the roller 34 of the lever [31 to open the air valve, and will hold said air valve open until the rear end 2 of said pro ection passes the roller 34, whereupon the air valve will close, and the gas vvalve azain'openinstantlv because the end a: of the projections willbe in position to lift the roller The liftingends 2 of the p ejections ato h are sospaced in sequence 0 operation from the rear ends of the provaries.

jections a to it that the instant the gas valve closes, the air valve will be opened, irrespective of-the projections or lifts which may be acting on the levers.

The lengths of the projections or lifts a to h of the cam'30 and the corresponding projections a to h on the cam 30 bear certain definite elective proportions one to the other for the purpose of holding the gas and air valves open definite periods of time to cut off varying proportions of gas and air that pass to the storage tank 18. The intermediate projections bear different ratios one to the other which may be arranged as desired for the purpose of obtaining a mixture substantiallv constant however richor thin the manufactured or natural gas may be.

For the purpose of locking the elbow levers 31, 31, opposite corresponding to jections or lifts on the cams 30, 30, the sliding rod 28 is provided with a series of perforations 37 equal in number to the number of projections on said cams and spaced apart'the same distance as said projections. A pin 38 slidable in a bracket 39 bolted to the frame 27 is in position to enter one or the other of said notches after the rod has been moved to adjust the elbow levers and hold said rod against movement.

For the purpose of moving the. cams 30, 30 any suitable means may be provided, in the present instance where the cams are show-n as rotating a belt 40 connects a pulley 41 on the motor shaft 20 with a pulley 42 on the shaft 29 of said cams. The pulleys 41 and 42 are so proportioned as to drive the cams at the desired speed.

F or the purpose of maintaining constant pressure at the cut-off valves 14 and 23, a pressure regulator is applied to the pipes which lead from the compressors to said valves. The compressor used on the gas pipe 13 is illustrated in detail in Fig. 5, and as there shown, a short pipe 43 connects the gas compressor 12 within the-reservoir 11 with one end of-a horizontal trunk 44 extendingthrough the wall of said reservoir to the outside thereof.'. The other end of said trunk is connected by an upturned branch 45 to the'fb'ottom of a well 46. "Within said well is an open cylinder 47 spaced from the wall thereof, which space contains a quantity of fluid 48, preferably mercury. A- bell 49 has its open end immersed in the mercury or other fluid and is adapted to rise and fall as the pressure of the gas A stem 50 attached to the bell 49 is guided at its upper end in the cap piece of the well 46, the lower end of said stem being attached to a crank 51 on one end of a rock shaft 52 that extends horizontally through the trunk 44 and carries at its opposite end within the reservoir ll a relief valve 5 3.adapted to open and close ports inclined straight edge .2, Fig. 12. With lifts of the modified type the adjustments of the elhow levers 31, 31, thereto are Jracti cally indefinite instead of being limited to the number of projections or lil'ts on the cams. The levers may be moved at will a very slight distance, the full width of the lifts or any fraction thereof in order to get the eXact mixture desired.

In Fig. 13, the lay-out of the cams 30, 30, used with the metering wheel is shown in proper relation one to the other.

A mixing apparatus such as described is equally well adapted, for intimately mixing all kinds of fluids. whether liquid or gaseous in correct proportions, Which. may be changed as desired by the simple operation of moving the sliding rod to carry the elbow levers 31, 31, into position opposite the proper pair of projections on the cams. As soon as this change has been made the apparatus continues its operation, measur ing the fluids and mixing them in the prv portions desired.

In Fig. 14 of the drawings, an'installa-- tion' is shown wherein there is associated with the cams 30, 30, a duplicate inlet pipe 10, a duplicate storage tank 11*, containinga compressor 12, connections 13, 4-3". 44, 46, and 53 to an additional gas cut-oil valve 14 and duplicate pipe communications 22* from the air pump to an additional air out-off valve 23 which gas and air valves arranged for cooperation are fastened to brackets 26 secured to a frame 27. There is a duplicate sliding rod 23 pro vided with perforations to receive locking pin 38". and also duplicate li? CPt-l (not shown in Fig. l t) for coaction with the cams 30. 30* for moving the 'alve stems. The said additional gas and air valves and connections are arranged as shown in Fig. 14 opposite the similar elements shown in Fig. 1, so as to he operated luv the same cams. Obviously by manipulation of the sliding rod 28 these additional cut otl' valves ll, 23 may be operated to supply a different quality of gaseous mixture from that which is supplied by the outplt valves 14 and 23, so that with the one installation or apparatus, fuel of different qualities may be supplied as is often desired for different purposes of'utility in the same establishment.

What We claim is:

l. in a fluid mixing apparatus, the conib nation with a mixing receptacle. and means for compelling a pluralitv of fluids under pressure to he delivered sepa atelv thereinto. of a plurality of devices each adapted to interrupt the flow of one of said fluids? a plurality of mechanisms each fo periodicallv operating one of such device and means for changing the relative periods of operation of said mechanisms 2. in a fluid mixing apparatus me costs bination with a mixing receptacle means for compelling a plurality of under pressure to be delivezed senar thereinto. of a pluralitv of (lei a rupting the liovv said fluids for toi'urol ling the proportionate quantities delivered. means for periodically operating such vices. and means for changing the relative periods of such oiiierations. i

3. In a iluid mixing! 51;),lfilf8tll8. the coin hination with a mixing: reecptac iaeai'is for compelling: a plurality of fluids under pressure to be delivered separately tlimimii;to of a plurality of devices for interrupting: the flow of said fluids for controlling the i' ortionate quantities di-ilivrred. r-ien periodicallv operating dcvic means for changing the it... i such operr ions.

4. in a fiuid mixing apparatus the con hination with a m xing receptacle an inca or compelling a plurality of tin. under pressure to be delivered 9: thereinto. of a. pluralitv of devil" rupting the llow of said fluids fo coaliug the pro 'iortionate quantit' means for periodically operating a vices. and means for siinultaneo ing the relative periods of such oper in a fluid mixing apparatus. t. bination with a mixing receptacle and means for compelling" a plurality under constant pressure to deli separatelv thereinlio, of a plurality vices each interrupting the low of y: l. control the iii-livery thereof to said tarlr. a separate int ns for period-i crating earl; of said driviccs. and a simultancouslv hanging the rcletii. riwls o't' sin-h operation.

(3. in a fluid mixing apraratus. the (7033ihination with a mixing recepta-r" nwans or compelling: a pluralitv i under constant pressure to be d. separately thereinto, of separate each interrupting the fl w of on of fluids for controlling proportionate nuintitics de-vlivcrid to said mixing recap separate means for 'ieritulicallv open each of said devices. and a common men for changing the relative opcraiinar peril-4.: of all of such devices to vary the propose; J' of fluids delivered.

7. In a fluid mixin zippers the corn- 1% bination with a mi ting! rei'm tacle nu,- for compellii'igz a pluralitv of fluids Ell? constant pressure to he delivered senaiatr v thereinto. of a pluralitv of devices inter- I ruptinpf the flow of said fluids for cont cl ling pig'miortionate quantities dciivei 8. In a fluid mixing apparatus, the combination with a mixing receptacle, and means for compelling a plurality of fluids under constant pressure to be delivered separately thereinto, of a plurality of devices interru 'iting the How of said fluids for controlling the proportionate quantities delivered to said receptacle, means for periodically operating such devices, and means for changing the relative operating periods of said devices.

9. In a lluid mixing apparatus, the coinoination ot a common mixing receptacle, means for delivering a plurality of fluids separately thereinto, devices between said delivery means and said mixing receptacle for contri'illingr proportionate quantities of fluids delivered, to said receptacle, means for periodically operating such devices, and meansfior changing the relative periods of such operations.

10. In a lluid mixing apparatus, the combination with a mixing receptacle,and means for compelling a plurality of fluids under constant pressure to he delivered separately thereto, of a separate valve in advance of the mixing receptacle for inter rupting and controlling the lion: of each fluid into said receptacle, scpa rate means for periodically opening said valvrs l'o' a predctcrmim-d time to permit proportionate quantities of the lluids to pass into said mixing receptacle, and means for varying the relative length of time .said valves remain open.

ll. In a fluid mixing apparatus, the comliination vcith a mixing receptacleminl means for causing a, plurality of iluids to be delivcrrd separately thercinto, of valves, each controlling the admission of fluid into said m xing); receptacle, separate i'neans for period cally and successively opening said vain-r; for a prcdctermimd time to permit tionate 'quantities of the lluids to pis-- into said mixing; receptacle, and means for varying the relative length 01 time the mid valves remain open.

1;. in a lluid mixing apparatus, the combinat on ii iii] a mixing receptacle, and means ic-r c-iuiing a pluralit v' of fluids to be do livci'sal separately thcrcinto, oi valves, each propi c ntrclling the admission of fluid, into said inking ri-i-epl :clc, separate means lor perimlicullj, and s ccessively opening said adnw ion valvr-a for a predeterniincd time to permit ]\l()}'-H*lliill2il.0 quantities of the fluids to pass ini said mixing receptacle and means for var; Br g; he relative length of time said valves remain open.

13. In a lluid mixing apparatus, tlncomhination with a mixing reccptaclenind means for causing a plurality of fluids to bc deliv rcil separately th rcinto, of valves, each controlling the admission of lluid into said mixing receptacle, and a separate cam device for periodically and successively opening each of said valves to permit proportionate quantities of fluids to pass into said mixing receptacle, and means for varying the relative length of time said valves remain open.

H. In a fluid mixing apparatus, the combination with a mixing receptaclemnd means for causing a plurality of fluids to be delivered separately thereinto, of valves, each controlling the admission of fluid into said mixing receptacle, a sliding rod, a plurality of rocking members carried thereby each for opening one of said valves, and separate devices i'or periodically and successively operating said rocking members to open the valves and permit proportionate quantities of the fluids to flow therefrom to the mixing receptacle.

15. In a fluid mixing apparatus, the combination with, a mixing rcceptaclc,and means for causing a plurality of fluids to be delivered separately thcreinto, of valves, each controlling the admission of fluid into said mixing receptacle, a plurality of rocking nicii'ibers each for openingone of said valves, separate devices for periodically and successively operating said rocking members toopcn the valves and permit proportionate quantities of the fluids to flow therethrough to the mixing receptacle, each of said separate devices comprising a plurality of means for holding the valves open varying lengths of time, and adjustable means carrying said rocking members for moving them in unison across said separate operating devices.

Hi. In a fluid mixing apparatus, the combination with a mixing receptacle,and means for causing a plurality of fluids to be delivered. separately thereinto, of valves, each for controlling the admission of fluid into said mixing receptacle, a sliding rod. a plurality of rocking members carried thereby, each for opening one of said valves, and a separate moving cam surface for periodically and successively operating each of said rocking members to open the valves and permit proportionate quantities of the fluids. to flow therethrough to the 17. In a fluid mixing apparatus, the com- ,bination vvith a mixing reccptacle,and means for causing a plurality of fluids to be delivered separately thercinto. of valves, each controlling the admission of fluid into said mixing receptacle, and a separate revoluble canri'or periodically and successively causmg each of said valves to open and permit proportionate quantities of the fluids to flow to the mixing receptacle, each of said rcvolublc cams having a plurality of lifting surfaces of di tlercnt lengths for varying the periods of time the several valves remain open.

19 In a fluid mixing apparatus, the corn iiination with a. mixing receptacle, and

mixing receptacle means for causing a plurality of fluids to be delivered separately thereinto, of valves, each controlling the admission of fluid into said mixing receptacle, a sliding rod, a plurality of rocking members carried thereby, each for opening one of said valves, an extension on each rocking member parallel to said sliding rod to maintain connection between said members and the valve itoper- 'ates as the rod is moved, and means for actuating said rocking members.

19. In a. fluid mixing apparatus, the combination with a mixing receptacle, and means for causing a plurality of fluids to be delivered separately thereinto, of valves, ach controlling the admission of fluid into said mixing receptacle, a sliding rod, a plurality of elbow levers fulcrumed on said rod, each for opening one of said valves, a right-angled finger on one end of each of said elbow levers extending parallel to said sliding rod and below the valve on which the stem of said valve bears, said fingers maintaining connection between the elbow levers and the valves as the sliding rod is moved, and means for actuating said elbow levers.

20. In a fluid mixing apparatus, the 'com bination with a mixing receptacle, and *means for causing a plurality of fluids to be delivered separately thereinto, of valves, each controlling the admission of fluid into said mixing receptacle, a sliding rod, a plurality of elbow levers fulcrumed on said rod, each for opening one of said valves, a right angled linger on one end of each of said elbow levers extending parallel to said sliding rod and below the valve on which the stem of said valve bears, said fingers maintaining connection between the elbow levers and the valves as the sliding rod is'moved, and separate cams each having a plurality of lifting surfaces of different lengths for actuating the opposite ends of said elbow levers.

21. In a fluid mixing apparatus, the combination with a mixing receptacle, and means for compelling a plurality of fluids under pressure to be delivered separately thereinto, of a. device for interrupting the flow of each of said fluids and for controlling the quantity of the same delivered, means for operating said devices. and means for changing the period of operation of the devices.

22. In a fluid mixing apparatus, the combination with a mixing receptacle, and means for delivering a plurality of fluids under constant pressure to said receptacle, of a valve controlling each fluid. means for automatically and intermittently opening the valves, and adjustable means for adjusting the period of retaining the valves open.

23. In a fluid mixing apparatus, the combination with a mixing receptacle, and means for delivering [luids inde iendently and under pressure to said receptacle, of a valve controlling each fluid, means for opening and closing said valves, and adjusting means for said first means adapted to change the period of opening and closing of each valve.

24. In a fluid mixing apparatus, the com bination with a mixing receptacle. and means for delivering fluids independently under pressure to said receptacle, of a regulator for each fluid, operating means for the regulators to control the passage 0t fluid therethrough, and means for adjusting the operating means for varying the proportion of fluids passing through the regulators.

In a fluid mixing apparatus, the HUEIP bination with a mixing receptacle. and means for compelling a plurality of flu ds to be delivered separately and under pressure to said receptacle, of a valve "for each fluid. opening and closing means for the valves whereby to control the pa: fluids therethrough, and adjusting u for said opening and clo ing means adapted to vary the anaount of fluid passing through the valves.

In testimony whereof we have hereunto set our hands in presence of to o subscribing witnesses.

\VILLIAM \VALLl CE I; i 'lhll. \VILLIAM H. VAN IIURN. Witnesses Jonx Conn, EDGAR J. KEMP. 

